Question

13. THIS IS FOR A BIOMECHANICS CLASS Describe how the angular position of a joint influences...

13. THIS IS FOR A BIOMECHANICS CLASS

Describe how the angular position of a joint influences the amount of torque produces assuming the amount of muscle force remains equal.

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

During normal joint rotation, the moment arm changes, changing the amount of torque a particular muscle-joint system can produce.

Generally, the greater the angle of attachment, the longer is the moment arm, which implies greater torque.

This can be clearly seen in the below diagram.

For larger joint angles, the muscle exerts the force on a longer moment arm, which implies greater torque.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
4) Describe the concept of angular kinematics. A) How are the forces of torque involved? Explain...
4) Describe the concept of angular kinematics. A) How are the forces of torque involved? Explain how the location of muscle insertion points increase or decrease torque. B) Describe the difference between angular and linear kinematics. If someone performs a kicking action, does the foot experience a greater angular displacement than the calf? What about linear displacement?
describe how spinal cord damage influences muscle activity or movement:
describe how spinal cord damage influences muscle activity or movement:
An 80 kg individual is in a seated position on a machine that tests knee extension...
An 80 kg individual is in a seated position on a machine that tests knee extension strength. The calf length is 0.440 m, calf/foot mass is 5.8% of the body mass, calf/foot center of mass is 53% of the calf length from the knee joint, and calf/foot moment of inertia about the knee joint is 0.350 kgm2. The quadriceps moment arm is 0.040 m. The machine’s padding contacts the calf at a constant moment arm (does not change with knee...
Angular momentum L in a rotating system is defined as L = I? (moment of inertia...
Angular momentum L in a rotating system is defined as L = I? (moment of inertia times angular speed). If there are no external forces changing the rotation (a force that changes rotation is a called a torque), then the total angular momentum of the system remains constant. In other words, raising or lowering one value (I or ?) makes the other change accordingly, because their product remains constant. Watch the YouTube video linked below. Ice skaters always go into...
How much knee extension torque is required to achieve a lower leg angular acceleration of 3...
How much knee extension torque is required to achieve a lower leg angular acceleration of 3 rad/s2 , assuming the lower leg has a mass of 6.2 kg and a radius of gyration equal to 0.23 m.
You are in a class titled Introduction to Artistic Expression, and your final project must be...
You are in a class titled Introduction to Artistic Expression, and your final project must be completed in class. You know that you will be given three objects and two boards to work with to create two separate displays. You also know that you must arrange the objects on the boards so they balance on a tiny pedestal. Once completed, one display will be a single object resting on a board balanced on top of a pedestal; the other will...
12. Through what angle in degrees does a 31 rpm record turn in 0.27 s 13....
12. Through what angle in degrees does a 31 rpm record turn in 0.27 s 13. Starting from rest, the same torque is applied to a solid sphere and a hollow sphere. Both spheres have the same size and mass, and both are rotating about their centers. After some time has elapsed, which sphere will be rotating faster? answer choices: a. hollow sphere b. They will be rotating equally fast c. solid sphere 14. In movies, it often happens that...
1. The equation Δ?=?0?+0.5??2Δx=v0t+0.5at2 Can be used to describe an object's position x. When can this...
1. The equation Δ?=?0?+0.5??2Δx=v0t+0.5at2 Can be used to describe an object's position x. When can this equation be applied? Group of answer choices: A. Displacement must be constant B. The object must be acted on by no more than one force C. Velocity must be constant D. Acceleration must be constant E. The force acting on the object must be gravity 2. If a vector A has a y component equal to |?|cos?|A|cos⁡θ, then the angle ?θ is the angle...
1. The visible region of the sun is known as a. corona b. photosphere c. radiation...
1. The visible region of the sun is known as a. corona b. photosphere c. radiation zone d. chromosphere 2. The average temperature of that part of the sun, which we see, is (a) 6000 k (b) 60,000 k (c) 600 k (d) 15 million k 3. Granulation of the sun is caused by a. sunspots b. prominences c. convection d. radiation 4. Convection zone is located a. next to the core b. between radiation zone and photosphere c. between...
Delta airlines case study Global strategy. Describe the current global strategy and provide evidence about how...
Delta airlines case study Global strategy. Describe the current global strategy and provide evidence about how the firms resources incompetencies support the given pressures regarding costs and local responsiveness. Describe entry modes have they usually used, and whether they are appropriate for the given strategy. Any key issues in their global strategy? casestudy: Atlanta, June 17, 2014. Sea of Delta employees and their families swarmed between food trucks, amusement park booths, and entertainment venues that were scattered throughout what would...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT